Google "Zelda twilight princess game cube walkthrough"
Twilight Princess
its compass for your information... and you find the compass in a chest in Twilight princess
find the cannon and get shot out of it.
http://faqs.ign.com/articles/747/747818p1.HTML this has everything you need to know about where to find the bugs. if the link does not work, just type in "golden insects in legend of Zelda twilight princess" and it will be there.
use the walkthroughs
Find the big key.
There is one in each dungeon.
somewhere
In the first dungeon.. If you have a compass, you can find them easily
in the goron mines
to the bridge of eldin